Lochinvar SMART SYSTEM 502 - 2072 User Manual

Copper-fin II/IIE Boiler, Water Heater and Pool HeaterService Manual Models: 402 - 2072 (Boiler & Water Heater) Models: 502 - 2072 (Pool Heater)Th

1 Service10Sequence of operation Table 1A_(continued from previous page) Sequence of Operation - Space Heating and DHWOPERATION DISPLAY9. If the DHW

11Display panel menu access Table 1B_Use this procedure to access menus from the display panel1 Service (continued)Note:

1 Service12Display panel parameter accessCascadeBMSTable 1C_This is a typical example of accessing a parameter, shown for parameter K2, SH pump delay

13Parameter tableTable 1D_This table lists SMART SYSTEM control module parameters and where to access them1 Service (continued)MenuSub ItemDescriptio

1 Service14Parameter table (continued)Table 1D_(continued from previous page) This table lists SMART SYSTEM control module parameters and where to ac

15Viewable and changeable control parametersA: GeneralA1: User codeThe User Code allows the user to access and change a limited number of control para

1 Service16B3: SH Maximum set pointThe SH maximum set point sets the maximum water temperature set point that can be used for space heating. The use

1 Service (continued)17 Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualE5: SH/DHW switching time (boiler only)When a SH call for heat

1 Service18F3: Maximum SH set pointWhen the outdoor temperature drops to its minimum setting (F1) the water temperature set point will be at this val

1 Service (continued)19F6: Outdoor air shutdown differentialThe outdoor air shutdown differential parameter is the number of degrees below parameter

2Hazard definitionsThe following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or

H: Control modesH1: SH controlling sensor (boiler only)The SH controlling sensor parameter selects the sensor the control will use to regulate the boi

1 Service (continued)21I: CascadeI1: Cascade addressThe boiler designated as the Leader needs to be programmed with address 0. All the Member boiler

22K4: System pump mode (boiler only)The system pump can be configured to operate in one of two modes. “CFH” runs the system pump whenever there is a

2 Maintenance23Maintenance and annual startupService technician(see the following pages for instructions)General: • Address reported problems • In

24Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the appliance. Failure to perfo

2 Maintenance (continued)25Check relief valve1. Inspect the relief valve and lift the lever to verify flow. Before operating any relief valve, ensu

262 Maintenance Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualCheck all wiring1. Inspect all wiring, making sure wires are in good c

272 Maintenance (continued) Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualAccess to the burner will require the following steps:1. T

2 Maintenance28 Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualAdjusting combustion air pressureThe following is a recommended method

2 Maintenance (continued)29 Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualPRESSUREREGULATORADJUSTMENT(UNDER CAPSCREW)INLETOUTLETGASVA

Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualPlease read before proceedingInstaller – Read all instructions, including this manual a

2 Maintenance Copper-fin II/IIE Boiler, Water Heater and Pool Service ManualInspect and clean the heat exchanger1. Turn off the main electrical powe

3 Troubleshooting31Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Always

3 Troubleshooting32FAULT CAUSE CORRECTIVE ACTIONNo Display- No 120 VAC supplied to unit. • Check external line switch, fuse, or breaker.• Check p

3 Troubleshooting (continued)33Temperature Resistance Temperature Resistance-50 490,813 20 46,218-40 336,606 30 34,558-30 234,196 40 26,099-20 165,18

3 Troubleshooting34FAULT CAUSE CORRECTIVE ACTIONNoisy Operation- Gas supply problem. • Refer to the Gas Connections Section of the Installati

3 Troubleshooting (continued)35FAULT DESCRIPTION CORRECTIVE ACTIONGas Pressure SW(Will require a manual reset once the condition has been corrected.)

3 Troubleshooting36FAULT DESCRIPTION CORRECTIVE ACTIONNo Flame Ign(Will require a manual reset. Press the RESET button on the SMART SYSTEM display t

3 Troubleshooting (continued)37FAULT DESCRIPTION CORRECTIVE ACTIONNo Flame Running(Will require a manual reset once the condition has been corrected.

38FAULT DESCRIPTION CORRECTIVE ACTIONManual Reset High Limit(Will require a manual reset once condition has been corrected. Press the RESET button on

3 Troubleshooting (continued)39FAULT DESCRIPTION CORRECTIVE ACTIONLouver Proving(Lockout will reset automatically after 5 minutes or may be

4What is in this manual?ServiceThe Copper-fin display• Display panel readout, buttons and their functionsControl module inputs• Control module inputs

3 Troubleshooting40FAULT DESCRIPTION CORRECTIVE ACTIONTemp O/Shoot(Lockout will reset automatically after 5 minutes or may be reset immediately once

3 Troubleshooting (continued)41FAULT DESCRIPTION CORRECTIVE ACTIONParameters Progr(Will require a manual reset once the condition has been corrected.

3 Troubleshooting42FAULT DESCRIPTION CORRECTIVE ACTIONWatch Dog ErrorThe main control board has detected an internal fault.• Cycle main power.• Repl

43NOTES

Revision Notes: Revision A (ECO #C08226) initial release.C(F,H,P)X-SER Rev A6/11

1 Service5MENU/EXITDISPLAY SCREENENTER/RESETTXENSUOIVERPNWODPU• Press to turn heater off or back on• Press to select a menu item• Press after paramet

1 Service6SMART SYSTEMCONTROL BOARDLOWVOLTAGECONNECTIONBOARDDHW THERMOSTAT(OPTIONAL)ROOM THERMOSTAT/ZONE CONTROL(OPTIONAL)SYSTEM SUPPLY/ENABLE SENSOR

7SMART SYSTEMCONTROLBOARDLOW VOLTAGECONNECTIONBOARDTHREE WAY VALVE(OPTIONAL ON BOILER)(STD ON POOL HEATER)LOUVER RELAYBUILDINGMANAGEMENTSYSTEMRUN TIME

1 Service8General OperationHow the appliance operatesThe Copper-fin uses a finned copper tube heat exchanger to transfer heat from the flue products

9Sequence of operationTable 1A_Sequence of Operation - Space Heating and DHW1 Service (continued)OPERATION DISPLAY1. The manual reset high limit (op